Tongkat Ali
A Southeast Asian root traditionally used in men's vitality formulas.
Mechanism
Tongkat Ali (Eurycoma longifolia) is a root native to Southeast Asia, long used in traditional wellness practices. It's studied for its relationship with the body's stress response and its potential to support testosterone remaining in its free, usable form rather than bound to carrier proteins.
What the evidence shows
A reasonably sized body of small human trials links Tongkat Ali extract to improvements in stress markers, mood, and testosterone-related measures. Horsewood Vitality uses a 100:1 extract, a concentration ratio commonly referenced in the research behind this ingredient.
Safety notes
Generally well tolerated at studied doses. Anyone with a hormone-sensitive condition or taking hormone-related medication should consult a doctor before use.